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<div class="title">qwt_matrix_raster_data.cpp</div>  </div>
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<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno">    1</span>&#160;<span class="comment">/******************************************************************************</span></div>
<div class="line"><a name="l00002"></a><span class="lineno">    2</span>&#160;<span class="comment"> * Qwt Widget Library</span></div>
<div class="line"><a name="l00003"></a><span class="lineno">    3</span>&#160;<span class="comment"> * Copyright (C) 1997   Josef Wilgen</span></div>
<div class="line"><a name="l00004"></a><span class="lineno">    4</span>&#160;<span class="comment"> * Copyright (C) 2002   Uwe Rathmann</span></div>
<div class="line"><a name="l00005"></a><span class="lineno">    5</span>&#160;<span class="comment"> *</span></div>
<div class="line"><a name="l00006"></a><span class="lineno">    6</span>&#160;<span class="comment"> * This library is free software; you can redistribute it and/or</span></div>
<div class="line"><a name="l00007"></a><span class="lineno">    7</span>&#160;<span class="comment"> * modify it under the terms of the Qwt License, Version 1.0</span></div>
<div class="line"><a name="l00008"></a><span class="lineno">    8</span>&#160;<span class="comment"> *****************************************************************************/</span></div>
<div class="line"><a name="l00009"></a><span class="lineno">    9</span>&#160; </div>
<div class="line"><a name="l00010"></a><span class="lineno">   10</span>&#160;<span class="preprocessor">#include &quot;qwt_matrix_raster_data.h&quot;</span></div>
<div class="line"><a name="l00011"></a><span class="lineno">   11</span>&#160;<span class="preprocessor">#include &quot;qwt_interval.h&quot;</span></div>
<div class="line"><a name="l00012"></a><span class="lineno">   12</span>&#160; </div>
<div class="line"><a name="l00013"></a><span class="lineno">   13</span>&#160;<span class="preprocessor">#include &lt;qvector.h&gt;</span></div>
<div class="line"><a name="l00014"></a><span class="lineno">   14</span>&#160;<span class="preprocessor">#include &lt;qnumeric.h&gt;</span></div>
<div class="line"><a name="l00015"></a><span class="lineno">   15</span>&#160;<span class="preprocessor">#include &lt;qrect.h&gt;</span></div>
<div class="line"><a name="l00016"></a><span class="lineno">   16</span>&#160; </div>
<div class="line"><a name="l00017"></a><span class="lineno">   17</span>&#160;<span class="keyword">static</span> <span class="keyword">inline</span> <span class="keywordtype">double</span> qwtHermiteInterpolate(</div>
<div class="line"><a name="l00018"></a><span class="lineno">   18</span>&#160;    <span class="keywordtype">double</span> A, <span class="keywordtype">double</span> B, <span class="keywordtype">double</span> C, <span class="keywordtype">double</span> D, <span class="keywordtype">double</span> t )</div>
<div class="line"><a name="l00019"></a><span class="lineno">   19</span>&#160;{</div>
<div class="line"><a name="l00020"></a><span class="lineno">   20</span>&#160;    <span class="keyword">const</span> <span class="keywordtype">double</span> t2 = t * t;</div>
<div class="line"><a name="l00021"></a><span class="lineno">   21</span>&#160;    <span class="keyword">const</span> <span class="keywordtype">double</span> t3 = t2 * t;</div>
<div class="line"><a name="l00022"></a><span class="lineno">   22</span>&#160; </div>
<div class="line"><a name="l00023"></a><span class="lineno">   23</span>&#160;    <span class="keyword">const</span> <span class="keywordtype">double</span> a = -A / 2.0 + ( 3.0 * B ) / 2.0 - ( 3.0 * C ) / 2.0 + D / 2.0;</div>
<div class="line"><a name="l00024"></a><span class="lineno">   24</span>&#160;    <span class="keyword">const</span> <span class="keywordtype">double</span> b = A - ( 5.0 * B ) / 2.0 + 2.0 * C - D / 2.0;</div>
<div class="line"><a name="l00025"></a><span class="lineno">   25</span>&#160;    <span class="keyword">const</span> <span class="keywordtype">double</span> c = -A / 2.0 + C / 2.0;</div>
<div class="line"><a name="l00026"></a><span class="lineno">   26</span>&#160;    <span class="keyword">const</span> <span class="keywordtype">double</span> d = B;</div>
<div class="line"><a name="l00027"></a><span class="lineno">   27</span>&#160; </div>
<div class="line"><a name="l00028"></a><span class="lineno">   28</span>&#160;    <span class="keywordflow">return</span> a * t3 + b * t2 + c * t + d;</div>
<div class="line"><a name="l00029"></a><span class="lineno">   29</span>&#160;}</div>
<div class="line"><a name="l00030"></a><span class="lineno">   30</span>&#160; </div>
<div class="line"><a name="l00031"></a><span class="lineno">   31</span>&#160;<span class="keyword">static</span> <span class="keyword">inline</span> <span class="keywordtype">double</span> qwtBicubicInterpolate(</div>
<div class="line"><a name="l00032"></a><span class="lineno">   32</span>&#160;    <span class="keywordtype">double</span> v00, <span class="keywordtype">double</span> v10, <span class="keywordtype">double</span> v20, <span class="keywordtype">double</span> v30,</div>
<div class="line"><a name="l00033"></a><span class="lineno">   33</span>&#160;    <span class="keywordtype">double</span> v01, <span class="keywordtype">double</span> v11, <span class="keywordtype">double</span> v21, <span class="keywordtype">double</span> v31,</div>
<div class="line"><a name="l00034"></a><span class="lineno">   34</span>&#160;    <span class="keywordtype">double</span> v02, <span class="keywordtype">double</span> v12, <span class="keywordtype">double</span> v22, <span class="keywordtype">double</span> v32,</div>
<div class="line"><a name="l00035"></a><span class="lineno">   35</span>&#160;    <span class="keywordtype">double</span> v03, <span class="keywordtype">double</span> v13, <span class="keywordtype">double</span> v23, <span class="keywordtype">double</span> v33,</div>
<div class="line"><a name="l00036"></a><span class="lineno">   36</span>&#160;    <span class="keywordtype">double</span> dx, <span class="keywordtype">double</span> dy )</div>
<div class="line"><a name="l00037"></a><span class="lineno">   37</span>&#160;{</div>
<div class="line"><a name="l00038"></a><span class="lineno">   38</span>&#160;    <span class="keyword">const</span> <span class="keywordtype">double</span> v0 = qwtHermiteInterpolate( v00, v10, v20, v30, dx );</div>
<div class="line"><a name="l00039"></a><span class="lineno">   39</span>&#160;    <span class="keyword">const</span> <span class="keywordtype">double</span> v1 = qwtHermiteInterpolate( v01, v11, v21, v31, dx );</div>
<div class="line"><a name="l00040"></a><span class="lineno">   40</span>&#160;    <span class="keyword">const</span> <span class="keywordtype">double</span> v2 = qwtHermiteInterpolate( v02, v12, v22, v32, dx );</div>
<div class="line"><a name="l00041"></a><span class="lineno">   41</span>&#160;    <span class="keyword">const</span> <span class="keywordtype">double</span> v3 = qwtHermiteInterpolate( v03, v13, v23, v33, dx );</div>
<div class="line"><a name="l00042"></a><span class="lineno">   42</span>&#160; </div>
<div class="line"><a name="l00043"></a><span class="lineno">   43</span>&#160;    <span class="keywordflow">return</span> qwtHermiteInterpolate( v0, v1, v2, v3, dy );</div>
<div class="line"><a name="l00044"></a><span class="lineno">   44</span>&#160;}</div>
<div class="line"><a name="l00045"></a><span class="lineno">   45</span>&#160; </div>
<div class="line"><a name="l00046"></a><span class="lineno">   46</span>&#160;<span class="keyword">class </span>QwtMatrixRasterData::PrivateData</div>
<div class="line"><a name="l00047"></a><span class="lineno">   47</span>&#160;{</div>
<div class="line"><a name="l00048"></a><span class="lineno">   48</span>&#160;  <span class="keyword">public</span>:</div>
<div class="line"><a name="l00049"></a><span class="lineno">   49</span>&#160;    PrivateData()</div>
<div class="line"><a name="l00050"></a><span class="lineno">   50</span>&#160;        : <a class="code" href="class_qwt_matrix_raster_data.html#afe2b274f467ae6ddb60c5d8f027ab8c6">resampleMode</a>( <a class="code" href="class_qwt_matrix_raster_data.html">QwtMatrixRasterData</a>::<a class="code" href="class_qwt_matrix_raster_data.html#a3c8def5d9ae452bd82e6c4b71b480209acaa0a9e3b8afd376472d6a587a3f9873">NearestNeighbour</a> )</div>
<div class="line"><a name="l00051"></a><span class="lineno">   51</span>&#160;        , <a class="code" href="class_qwt_matrix_raster_data.html#ab6c21de8fd8945b634624774f3b3d85b">numColumns</a>(0)</div>
<div class="line"><a name="l00052"></a><span class="lineno">   52</span>&#160;    {</div>
<div class="line"><a name="l00053"></a><span class="lineno">   53</span>&#160;    }</div>
<div class="line"><a name="l00054"></a><span class="lineno">   54</span>&#160; </div>
<div class="line"><a name="l00055"></a><span class="lineno">   55</span>&#160;    <span class="keyword">inline</span> <span class="keywordtype">double</span> <a class="code" href="class_qwt_matrix_raster_data.html#a0629b3294f3bcfd9cc210b06eeeff6c4">value</a>(<span class="keywordtype">int</span> row, <span class="keywordtype">int</span> col)<span class="keyword"> const</span></div>
<div class="line"><a name="l00056"></a><span class="lineno">   56</span>&#160;<span class="keyword">    </span>{</div>
<div class="line"><a name="l00057"></a><span class="lineno">   57</span>&#160;        <span class="keywordflow">return</span> values.data()[ row * <a class="code" href="class_qwt_matrix_raster_data.html#ab6c21de8fd8945b634624774f3b3d85b">numColumns</a> + col ];</div>
<div class="line"><a name="l00058"></a><span class="lineno">   58</span>&#160;    }</div>
<div class="line"><a name="l00059"></a><span class="lineno">   59</span>&#160; </div>
<div class="line"><a name="l00060"></a><span class="lineno">   60</span>&#160;    <a class="code" href="class_qwt_interval.html">QwtInterval</a> intervals[3];</div>
<div class="line"><a name="l00061"></a><span class="lineno">   61</span>&#160;    <a class="code" href="class_qwt_matrix_raster_data.html#a3c8def5d9ae452bd82e6c4b71b480209">QwtMatrixRasterData::ResampleMode</a> <a class="code" href="class_qwt_matrix_raster_data.html#afe2b274f467ae6ddb60c5d8f027ab8c6">resampleMode</a>;</div>
<div class="line"><a name="l00062"></a><span class="lineno">   62</span>&#160; </div>
<div class="line"><a name="l00063"></a><span class="lineno">   63</span>&#160;    <a class="code" href="class_q_vector.html">QVector&lt; double &gt;</a> values;</div>
<div class="line"><a name="l00064"></a><span class="lineno">   64</span>&#160;    <span class="keywordtype">int</span> <a class="code" href="class_qwt_matrix_raster_data.html#ab6c21de8fd8945b634624774f3b3d85b">numColumns</a>;</div>
<div class="line"><a name="l00065"></a><span class="lineno">   65</span>&#160;    <span class="keywordtype">int</span> <a class="code" href="class_qwt_matrix_raster_data.html#aca86a73cc956acce6edd9731482ccc11">numRows</a>;</div>
<div class="line"><a name="l00066"></a><span class="lineno">   66</span>&#160; </div>
<div class="line"><a name="l00067"></a><span class="lineno">   67</span>&#160;    <span class="keywordtype">double</span> dx;</div>
<div class="line"><a name="l00068"></a><span class="lineno">   68</span>&#160;    <span class="keywordtype">double</span> dy;</div>
<div class="line"><a name="l00069"></a><span class="lineno">   69</span>&#160;};</div>
<div class="line"><a name="l00070"></a><span class="lineno">   70</span>&#160; </div>
<div class="line"><a name="l00072"></a><span class="lineno"><a class="line" href="class_qwt_matrix_raster_data.html#a3e80514459cc6aab03cfd839da53e45e">   72</a></span>&#160;<a class="code" href="class_qwt_matrix_raster_data.html#a3e80514459cc6aab03cfd839da53e45e">QwtMatrixRasterData::QwtMatrixRasterData</a>()</div>
<div class="line"><a name="l00073"></a><span class="lineno">   73</span>&#160;{</div>
<div class="line"><a name="l00074"></a><span class="lineno">   74</span>&#160;    m_data = <span class="keyword">new</span> PrivateData();</div>
<div class="line"><a name="l00075"></a><span class="lineno">   75</span>&#160;    update();</div>
<div class="line"><a name="l00076"></a><span class="lineno">   76</span>&#160;}</div>
<div class="line"><a name="l00077"></a><span class="lineno">   77</span>&#160; </div>
<div class="line"><a name="l00079"></a><span class="lineno"><a class="line" href="class_qwt_matrix_raster_data.html#a15284284966f25383fe67f2e278f4869">   79</a></span>&#160;<a class="code" href="class_qwt_matrix_raster_data.html#a15284284966f25383fe67f2e278f4869">QwtMatrixRasterData::~QwtMatrixRasterData</a>()</div>
<div class="line"><a name="l00080"></a><span class="lineno">   80</span>&#160;{</div>
<div class="line"><a name="l00081"></a><span class="lineno">   81</span>&#160;    <span class="keyword">delete</span> m_data;</div>
<div class="line"><a name="l00082"></a><span class="lineno">   82</span>&#160;}</div>
<div class="line"><a name="l00083"></a><span class="lineno">   83</span>&#160; </div>
<div class="line"><a name="l00090"></a><span class="lineno"><a class="line" href="class_qwt_matrix_raster_data.html#a038effe6e4be13725b7a8d35370595fd">   90</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="class_qwt_matrix_raster_data.html#a038effe6e4be13725b7a8d35370595fd">QwtMatrixRasterData::setResampleMode</a>( <a class="code" href="class_qwt_matrix_raster_data.html#a3c8def5d9ae452bd82e6c4b71b480209">ResampleMode</a> mode )</div>
<div class="line"><a name="l00091"></a><span class="lineno">   91</span>&#160;{</div>
<div class="line"><a name="l00092"></a><span class="lineno">   92</span>&#160;    m_data-&gt;resampleMode = mode;</div>
<div class="line"><a name="l00093"></a><span class="lineno">   93</span>&#160;}</div>
<div class="line"><a name="l00094"></a><span class="lineno">   94</span>&#160; </div>
<div class="line"><a name="l00099"></a><span class="lineno"><a class="line" href="class_qwt_matrix_raster_data.html#afe2b274f467ae6ddb60c5d8f027ab8c6">   99</a></span>&#160;<a class="code" href="class_qwt_matrix_raster_data.html#a3c8def5d9ae452bd82e6c4b71b480209">QwtMatrixRasterData::ResampleMode</a> <a class="code" href="class_qwt_matrix_raster_data.html#afe2b274f467ae6ddb60c5d8f027ab8c6">QwtMatrixRasterData::resampleMode</a>()<span class="keyword"> const</span></div>
<div class="line"><a name="l00100"></a><span class="lineno">  100</span>&#160;<span class="keyword"></span>{</div>
<div class="line"><a name="l00101"></a><span class="lineno">  101</span>&#160;    <span class="keywordflow">return</span> m_data-&gt;resampleMode;</div>
<div class="line"><a name="l00102"></a><span class="lineno">  102</span>&#160;}</div>
<div class="line"><a name="l00103"></a><span class="lineno">  103</span>&#160; </div>
<div class="line"><a name="l00120"></a><span class="lineno"><a class="line" href="class_qwt_matrix_raster_data.html#a69db38d8f920edb9dc3f0953ca16db8f">  120</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="class_qwt_matrix_raster_data.html#a69db38d8f920edb9dc3f0953ca16db8f">QwtMatrixRasterData::setInterval</a>(</div>
<div class="line"><a name="l00121"></a><span class="lineno">  121</span>&#160;    Qt::Axis axis, <span class="keyword">const</span> <a class="code" href="class_qwt_interval.html">QwtInterval</a>&amp; interval )</div>
<div class="line"><a name="l00122"></a><span class="lineno">  122</span>&#160;{</div>
<div class="line"><a name="l00123"></a><span class="lineno">  123</span>&#160;    <span class="keywordflow">if</span> ( axis &gt;= 0 &amp;&amp; axis &lt;= 2 )</div>
<div class="line"><a name="l00124"></a><span class="lineno">  124</span>&#160;    {</div>
<div class="line"><a name="l00125"></a><span class="lineno">  125</span>&#160;        m_data-&gt;intervals[axis] = <a class="code" href="class_qwt_matrix_raster_data.html#a1d8668b0d9fe4c98514e272837c2b563">interval</a>;</div>
<div class="line"><a name="l00126"></a><span class="lineno">  126</span>&#160;        update();</div>
<div class="line"><a name="l00127"></a><span class="lineno">  127</span>&#160;    }</div>
<div class="line"><a name="l00128"></a><span class="lineno">  128</span>&#160;}</div>
<div class="line"><a name="l00129"></a><span class="lineno">  129</span>&#160; </div>
<div class="line"><a name="l00134"></a><span class="lineno"><a class="line" href="class_qwt_matrix_raster_data.html#a1d8668b0d9fe4c98514e272837c2b563">  134</a></span>&#160;<a class="code" href="class_qwt_interval.html">QwtInterval</a> <a class="code" href="class_qwt_matrix_raster_data.html#a1d8668b0d9fe4c98514e272837c2b563">QwtMatrixRasterData::interval</a>( Qt::Axis axis )<span class="keyword"> const</span></div>
<div class="line"><a name="l00135"></a><span class="lineno">  135</span>&#160;<span class="keyword"></span>{</div>
<div class="line"><a name="l00136"></a><span class="lineno">  136</span>&#160;    <span class="keywordflow">if</span> ( axis &gt;= 0 &amp;&amp; axis &lt;= 2 )</div>
<div class="line"><a name="l00137"></a><span class="lineno">  137</span>&#160;        <span class="keywordflow">return</span> m_data-&gt;intervals[ axis ];</div>
<div class="line"><a name="l00138"></a><span class="lineno">  138</span>&#160; </div>
<div class="line"><a name="l00139"></a><span class="lineno">  139</span>&#160;    <span class="keywordflow">return</span> <a class="code" href="class_qwt_interval.html">QwtInterval</a>();</div>
<div class="line"><a name="l00140"></a><span class="lineno">  140</span>&#160;}</div>
<div class="line"><a name="l00141"></a><span class="lineno">  141</span>&#160; </div>
<div class="line"><a name="l00155"></a><span class="lineno"><a class="line" href="class_qwt_matrix_raster_data.html#a578ffc26f04a9099e2b31fc2d9360adb">  155</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="class_qwt_matrix_raster_data.html#a578ffc26f04a9099e2b31fc2d9360adb">QwtMatrixRasterData::setValueMatrix</a>(</div>
<div class="line"><a name="l00156"></a><span class="lineno">  156</span>&#160;    <span class="keyword">const</span> <a class="code" href="class_q_vector.html">QVector&lt; double &gt;</a>&amp; values, <span class="keywordtype">int</span> numColumns )</div>
<div class="line"><a name="l00157"></a><span class="lineno">  157</span>&#160;{</div>
<div class="line"><a name="l00158"></a><span class="lineno">  158</span>&#160;    m_data-&gt;values = values;</div>
<div class="line"><a name="l00159"></a><span class="lineno">  159</span>&#160;    m_data-&gt;numColumns = qMax( <a class="code" href="class_qwt_matrix_raster_data.html#ab6c21de8fd8945b634624774f3b3d85b">numColumns</a>, 0 );</div>
<div class="line"><a name="l00160"></a><span class="lineno">  160</span>&#160;    update();</div>
<div class="line"><a name="l00161"></a><span class="lineno">  161</span>&#160;}</div>
<div class="line"><a name="l00162"></a><span class="lineno">  162</span>&#160; </div>
<div class="line"><a name="l00167"></a><span class="lineno"><a class="line" href="class_qwt_matrix_raster_data.html#a95b3ade23f3bce8b84702ce64cb20e3e">  167</a></span>&#160;<span class="keyword">const</span> <a class="code" href="class_q_vector.html">QVector&lt; double &gt;</a> <a class="code" href="class_qwt_matrix_raster_data.html#a95b3ade23f3bce8b84702ce64cb20e3e">QwtMatrixRasterData::valueMatrix</a>()<span class="keyword"> const</span></div>
<div class="line"><a name="l00168"></a><span class="lineno">  168</span>&#160;<span class="keyword"></span>{</div>
<div class="line"><a name="l00169"></a><span class="lineno">  169</span>&#160;    <span class="keywordflow">return</span> m_data-&gt;values;</div>
<div class="line"><a name="l00170"></a><span class="lineno">  170</span>&#160;}</div>
<div class="line"><a name="l00171"></a><span class="lineno">  171</span>&#160; </div>
<div class="line"><a name="l00181"></a><span class="lineno"><a class="line" href="class_qwt_matrix_raster_data.html#a4601944bceabd921cdaa544180576274">  181</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="class_qwt_matrix_raster_data.html#a4601944bceabd921cdaa544180576274">QwtMatrixRasterData::setValue</a>( <span class="keywordtype">int</span> row, <span class="keywordtype">int</span> col, <span class="keywordtype">double</span> value )</div>
<div class="line"><a name="l00182"></a><span class="lineno">  182</span>&#160;{</div>
<div class="line"><a name="l00183"></a><span class="lineno">  183</span>&#160;    <span class="keywordflow">if</span> ( row &gt;= 0 &amp;&amp; row &lt; m_data-&gt;<a class="code" href="class_qwt_matrix_raster_data.html#aca86a73cc956acce6edd9731482ccc11">numRows</a> &amp;&amp;</div>
<div class="line"><a name="l00184"></a><span class="lineno">  184</span>&#160;        col &gt;= 0 &amp;&amp; col &lt; m_data-&gt;<a class="code" href="class_qwt_matrix_raster_data.html#ab6c21de8fd8945b634624774f3b3d85b">numColumns</a> )</div>
<div class="line"><a name="l00185"></a><span class="lineno">  185</span>&#160;    {</div>
<div class="line"><a name="l00186"></a><span class="lineno">  186</span>&#160;        <span class="keyword">const</span> <span class="keywordtype">int</span> index = row * m_data-&gt;numColumns + col;</div>
<div class="line"><a name="l00187"></a><span class="lineno">  187</span>&#160;        m_data-&gt;values.data()[ index ] = <a class="code" href="class_qwt_matrix_raster_data.html#a0629b3294f3bcfd9cc210b06eeeff6c4">value</a>;</div>
<div class="line"><a name="l00188"></a><span class="lineno">  188</span>&#160;    }</div>
<div class="line"><a name="l00189"></a><span class="lineno">  189</span>&#160;}</div>
<div class="line"><a name="l00190"></a><span class="lineno">  190</span>&#160; </div>
<div class="line"><a name="l00195"></a><span class="lineno"><a class="line" href="class_qwt_matrix_raster_data.html#ab6c21de8fd8945b634624774f3b3d85b">  195</a></span>&#160;<span class="keywordtype">int</span> <a class="code" href="class_qwt_matrix_raster_data.html#ab6c21de8fd8945b634624774f3b3d85b">QwtMatrixRasterData::numColumns</a>()<span class="keyword"> const</span></div>
<div class="line"><a name="l00196"></a><span class="lineno">  196</span>&#160;<span class="keyword"></span>{</div>
<div class="line"><a name="l00197"></a><span class="lineno">  197</span>&#160;    <span class="keywordflow">return</span> m_data-&gt;numColumns;</div>
<div class="line"><a name="l00198"></a><span class="lineno">  198</span>&#160;}</div>
<div class="line"><a name="l00199"></a><span class="lineno">  199</span>&#160; </div>
<div class="line"><a name="l00204"></a><span class="lineno"><a class="line" href="class_qwt_matrix_raster_data.html#aca86a73cc956acce6edd9731482ccc11">  204</a></span>&#160;<span class="keywordtype">int</span> <a class="code" href="class_qwt_matrix_raster_data.html#aca86a73cc956acce6edd9731482ccc11">QwtMatrixRasterData::numRows</a>()<span class="keyword"> const</span></div>
<div class="line"><a name="l00205"></a><span class="lineno">  205</span>&#160;<span class="keyword"></span>{</div>
<div class="line"><a name="l00206"></a><span class="lineno">  206</span>&#160;    <span class="keywordflow">return</span> m_data-&gt;numRows;</div>
<div class="line"><a name="l00207"></a><span class="lineno">  207</span>&#160;}</div>
<div class="line"><a name="l00208"></a><span class="lineno">  208</span>&#160; </div>
<div class="line"><a name="l00229"></a><span class="lineno"><a class="line" href="class_qwt_matrix_raster_data.html#a8c32a3222b2b4ad15036898532e95ffa">  229</a></span>&#160;QRectF <a class="code" href="class_qwt_matrix_raster_data.html#a8c32a3222b2b4ad15036898532e95ffa">QwtMatrixRasterData::pixelHint</a>( <span class="keyword">const</span> QRectF&amp; area )<span class="keyword"> const</span></div>
<div class="line"><a name="l00230"></a><span class="lineno">  230</span>&#160;<span class="keyword"></span>{</div>
<div class="line"><a name="l00231"></a><span class="lineno">  231</span>&#160;    Q_UNUSED( area )</div>
<div class="line"><a name="l00232"></a><span class="lineno">  232</span>&#160; </div>
<div class="line"><a name="l00233"></a><span class="lineno">  233</span>&#160;    QRectF rect;</div>
<div class="line"><a name="l00234"></a><span class="lineno">  234</span>&#160;    <span class="keywordflow">if</span> ( m_data-&gt;resampleMode == <a class="code" href="class_qwt_matrix_raster_data.html#a3c8def5d9ae452bd82e6c4b71b480209acaa0a9e3b8afd376472d6a587a3f9873">NearestNeighbour</a> )</div>
<div class="line"><a name="l00235"></a><span class="lineno">  235</span>&#160;    {</div>
<div class="line"><a name="l00236"></a><span class="lineno">  236</span>&#160;        <span class="keyword">const</span> <a class="code" href="class_qwt_interval.html">QwtInterval</a> intervalX = <a class="code" href="class_qwt_matrix_raster_data.html#a1d8668b0d9fe4c98514e272837c2b563">interval</a>( Qt::XAxis );</div>
<div class="line"><a name="l00237"></a><span class="lineno">  237</span>&#160;        <span class="keyword">const</span> <a class="code" href="class_qwt_interval.html">QwtInterval</a> intervalY = <a class="code" href="class_qwt_matrix_raster_data.html#a1d8668b0d9fe4c98514e272837c2b563">interval</a>( Qt::YAxis );</div>
<div class="line"><a name="l00238"></a><span class="lineno">  238</span>&#160;        <span class="keywordflow">if</span> ( intervalX.<a class="code" href="class_qwt_interval.html#ad742235a737d4d0b12cba1cab2df55f3">isValid</a>() &amp;&amp; intervalY.<a class="code" href="class_qwt_interval.html#ad742235a737d4d0b12cba1cab2df55f3">isValid</a>() )</div>
<div class="line"><a name="l00239"></a><span class="lineno">  239</span>&#160;        {</div>
<div class="line"><a name="l00240"></a><span class="lineno">  240</span>&#160;            rect = QRectF( intervalX.<a class="code" href="class_qwt_interval.html#a0df143a36d76a677976d82987cab8a06">minValue</a>(), intervalY.<a class="code" href="class_qwt_interval.html#a0df143a36d76a677976d82987cab8a06">minValue</a>(),</div>
<div class="line"><a name="l00241"></a><span class="lineno">  241</span>&#160;                m_data-&gt;dx, m_data-&gt;dy );</div>
<div class="line"><a name="l00242"></a><span class="lineno">  242</span>&#160;        }</div>
<div class="line"><a name="l00243"></a><span class="lineno">  243</span>&#160;    }</div>
<div class="line"><a name="l00244"></a><span class="lineno">  244</span>&#160; </div>
<div class="line"><a name="l00245"></a><span class="lineno">  245</span>&#160;    <span class="keywordflow">return</span> rect;</div>
<div class="line"><a name="l00246"></a><span class="lineno">  246</span>&#160;}</div>
<div class="line"><a name="l00247"></a><span class="lineno">  247</span>&#160; </div>
<div class="line"><a name="l00256"></a><span class="lineno"><a class="line" href="class_qwt_matrix_raster_data.html#a0629b3294f3bcfd9cc210b06eeeff6c4">  256</a></span>&#160;<span class="keywordtype">double</span> <a class="code" href="class_qwt_matrix_raster_data.html#a0629b3294f3bcfd9cc210b06eeeff6c4">QwtMatrixRasterData::value</a>( <span class="keywordtype">double</span> x, <span class="keywordtype">double</span> y )<span class="keyword"> const</span></div>
<div class="line"><a name="l00257"></a><span class="lineno">  257</span>&#160;<span class="keyword"></span>{</div>
<div class="line"><a name="l00258"></a><span class="lineno">  258</span>&#160;    <span class="keyword">const</span> <a class="code" href="class_qwt_interval.html">QwtInterval</a> xInterval = <a class="code" href="class_qwt_matrix_raster_data.html#a1d8668b0d9fe4c98514e272837c2b563">interval</a>( Qt::XAxis );</div>
<div class="line"><a name="l00259"></a><span class="lineno">  259</span>&#160;    <span class="keyword">const</span> <a class="code" href="class_qwt_interval.html">QwtInterval</a> yInterval = <a class="code" href="class_qwt_matrix_raster_data.html#a1d8668b0d9fe4c98514e272837c2b563">interval</a>( Qt::YAxis );</div>
<div class="line"><a name="l00260"></a><span class="lineno">  260</span>&#160; </div>
<div class="line"><a name="l00261"></a><span class="lineno">  261</span>&#160;    <span class="keywordflow">if</span> ( !( xInterval.<a class="code" href="class_qwt_interval.html#ae6a7b6025679010bad8e0a6ade4a2eec">contains</a>(x) &amp;&amp; yInterval.<a class="code" href="class_qwt_interval.html#ae6a7b6025679010bad8e0a6ade4a2eec">contains</a>(y) ) )</div>
<div class="line"><a name="l00262"></a><span class="lineno">  262</span>&#160;        <span class="keywordflow">return</span> qQNaN();</div>
<div class="line"><a name="l00263"></a><span class="lineno">  263</span>&#160; </div>
<div class="line"><a name="l00264"></a><span class="lineno">  264</span>&#160;    <span class="keywordtype">double</span> <a class="code" href="class_qwt_matrix_raster_data.html#a0629b3294f3bcfd9cc210b06eeeff6c4">value</a>;</div>
<div class="line"><a name="l00265"></a><span class="lineno">  265</span>&#160; </div>
<div class="line"><a name="l00266"></a><span class="lineno">  266</span>&#160;    <span class="keywordflow">switch</span>( m_data-&gt;resampleMode )</div>
<div class="line"><a name="l00267"></a><span class="lineno">  267</span>&#160;    {</div>
<div class="line"><a name="l00268"></a><span class="lineno">  268</span>&#160;        <span class="keywordflow">case</span> <a class="code" href="class_qwt_matrix_raster_data.html#a3c8def5d9ae452bd82e6c4b71b480209a9fde75b1f87fcdb21a5ef54bb3797700">BicubicInterpolation</a>:</div>
<div class="line"><a name="l00269"></a><span class="lineno">  269</span>&#160;        {</div>
<div class="line"><a name="l00270"></a><span class="lineno">  270</span>&#160;            <span class="keyword">const</span> <span class="keywordtype">double</span> colF = ( x - xInterval.<a class="code" href="class_qwt_interval.html#a0df143a36d76a677976d82987cab8a06">minValue</a>() ) / m_data-&gt;dx;</div>
<div class="line"><a name="l00271"></a><span class="lineno">  271</span>&#160;            <span class="keyword">const</span> <span class="keywordtype">double</span> rowF = ( y - yInterval.<a class="code" href="class_qwt_interval.html#a0df143a36d76a677976d82987cab8a06">minValue</a>() ) / m_data-&gt;dy;</div>
<div class="line"><a name="l00272"></a><span class="lineno">  272</span>&#160; </div>
<div class="line"><a name="l00273"></a><span class="lineno">  273</span>&#160;            <span class="keyword">const</span> <span class="keywordtype">int</span> col = qRound( colF );</div>
<div class="line"><a name="l00274"></a><span class="lineno">  274</span>&#160;            <span class="keyword">const</span> <span class="keywordtype">int</span> row = qRound( rowF );</div>
<div class="line"><a name="l00275"></a><span class="lineno">  275</span>&#160; </div>
<div class="line"><a name="l00276"></a><span class="lineno">  276</span>&#160;            <span class="keywordtype">int</span> col0 = col - 2;</div>
<div class="line"><a name="l00277"></a><span class="lineno">  277</span>&#160;            <span class="keywordtype">int</span> col1 = col - 1;</div>
<div class="line"><a name="l00278"></a><span class="lineno">  278</span>&#160;            <span class="keywordtype">int</span> col2 = col;</div>
<div class="line"><a name="l00279"></a><span class="lineno">  279</span>&#160;            <span class="keywordtype">int</span> col3 = col + 1;</div>
<div class="line"><a name="l00280"></a><span class="lineno">  280</span>&#160; </div>
<div class="line"><a name="l00281"></a><span class="lineno">  281</span>&#160;            <span class="keywordflow">if</span> ( col1 &lt; 0 )</div>
<div class="line"><a name="l00282"></a><span class="lineno">  282</span>&#160;                col1 = col2;</div>
<div class="line"><a name="l00283"></a><span class="lineno">  283</span>&#160; </div>
<div class="line"><a name="l00284"></a><span class="lineno">  284</span>&#160;            <span class="keywordflow">if</span> ( col0 &lt; 0 )</div>
<div class="line"><a name="l00285"></a><span class="lineno">  285</span>&#160;                col0 = col1;</div>
<div class="line"><a name="l00286"></a><span class="lineno">  286</span>&#160; </div>
<div class="line"><a name="l00287"></a><span class="lineno">  287</span>&#160;            <span class="keywordflow">if</span> ( col2 &gt;= m_data-&gt;numColumns )</div>
<div class="line"><a name="l00288"></a><span class="lineno">  288</span>&#160;                col2 = col1;</div>
<div class="line"><a name="l00289"></a><span class="lineno">  289</span>&#160; </div>
<div class="line"><a name="l00290"></a><span class="lineno">  290</span>&#160;            <span class="keywordflow">if</span> ( col3 &gt;= m_data-&gt;numColumns )</div>
<div class="line"><a name="l00291"></a><span class="lineno">  291</span>&#160;                col3 = col2;</div>
<div class="line"><a name="l00292"></a><span class="lineno">  292</span>&#160; </div>
<div class="line"><a name="l00293"></a><span class="lineno">  293</span>&#160;            <span class="keywordtype">int</span> row0 = row - 2;</div>
<div class="line"><a name="l00294"></a><span class="lineno">  294</span>&#160;            <span class="keywordtype">int</span> row1 = row - 1;</div>
<div class="line"><a name="l00295"></a><span class="lineno">  295</span>&#160;            <span class="keywordtype">int</span> row2 = row;</div>
<div class="line"><a name="l00296"></a><span class="lineno">  296</span>&#160;            <span class="keywordtype">int</span> row3 = row + 1;</div>
<div class="line"><a name="l00297"></a><span class="lineno">  297</span>&#160; </div>
<div class="line"><a name="l00298"></a><span class="lineno">  298</span>&#160;            <span class="keywordflow">if</span> ( row1 &lt; 0 )</div>
<div class="line"><a name="l00299"></a><span class="lineno">  299</span>&#160;                row1 = row2;</div>
<div class="line"><a name="l00300"></a><span class="lineno">  300</span>&#160; </div>
<div class="line"><a name="l00301"></a><span class="lineno">  301</span>&#160;            <span class="keywordflow">if</span> ( row0 &lt; 0 )</div>
<div class="line"><a name="l00302"></a><span class="lineno">  302</span>&#160;                row0 = row1;</div>
<div class="line"><a name="l00303"></a><span class="lineno">  303</span>&#160; </div>
<div class="line"><a name="l00304"></a><span class="lineno">  304</span>&#160;            <span class="keywordflow">if</span> ( row2 &gt;= m_data-&gt;numRows )</div>
<div class="line"><a name="l00305"></a><span class="lineno">  305</span>&#160;                row2 = row1;</div>
<div class="line"><a name="l00306"></a><span class="lineno">  306</span>&#160; </div>
<div class="line"><a name="l00307"></a><span class="lineno">  307</span>&#160;            <span class="keywordflow">if</span> ( row3 &gt;= m_data-&gt;numRows )</div>
<div class="line"><a name="l00308"></a><span class="lineno">  308</span>&#160;                row3 = row2;</div>
<div class="line"><a name="l00309"></a><span class="lineno">  309</span>&#160; </div>
<div class="line"><a name="l00310"></a><span class="lineno">  310</span>&#160;            <span class="comment">// First row</span></div>
<div class="line"><a name="l00311"></a><span class="lineno">  311</span>&#160;            <span class="keyword">const</span> <span class="keywordtype">double</span> v00 = m_data-&gt;value( row0, col0 );</div>
<div class="line"><a name="l00312"></a><span class="lineno">  312</span>&#160;            <span class="keyword">const</span> <span class="keywordtype">double</span> v10 = m_data-&gt;value( row0, col1 );</div>
<div class="line"><a name="l00313"></a><span class="lineno">  313</span>&#160;            <span class="keyword">const</span> <span class="keywordtype">double</span> v20 = m_data-&gt;value( row0, col2 );</div>
<div class="line"><a name="l00314"></a><span class="lineno">  314</span>&#160;            <span class="keyword">const</span> <span class="keywordtype">double</span> v30 = m_data-&gt;value( row0, col3 );</div>
<div class="line"><a name="l00315"></a><span class="lineno">  315</span>&#160; </div>
<div class="line"><a name="l00316"></a><span class="lineno">  316</span>&#160;            <span class="comment">// Second row</span></div>
<div class="line"><a name="l00317"></a><span class="lineno">  317</span>&#160;            <span class="keyword">const</span> <span class="keywordtype">double</span> v01 = m_data-&gt;value( row1, col0 );</div>
<div class="line"><a name="l00318"></a><span class="lineno">  318</span>&#160;            <span class="keyword">const</span> <span class="keywordtype">double</span> v11 = m_data-&gt;value( row1, col1 );</div>
<div class="line"><a name="l00319"></a><span class="lineno">  319</span>&#160;            <span class="keyword">const</span> <span class="keywordtype">double</span> v21 = m_data-&gt;value( row1, col2 );</div>
<div class="line"><a name="l00320"></a><span class="lineno">  320</span>&#160;            <span class="keyword">const</span> <span class="keywordtype">double</span> v31 = m_data-&gt;value( row1, col3 );</div>
<div class="line"><a name="l00321"></a><span class="lineno">  321</span>&#160; </div>
<div class="line"><a name="l00322"></a><span class="lineno">  322</span>&#160;            <span class="comment">// Third row</span></div>
<div class="line"><a name="l00323"></a><span class="lineno">  323</span>&#160;            <span class="keyword">const</span> <span class="keywordtype">double</span> v02 = m_data-&gt;value( row2, col0 );</div>
<div class="line"><a name="l00324"></a><span class="lineno">  324</span>&#160;            <span class="keyword">const</span> <span class="keywordtype">double</span> v12 = m_data-&gt;value( row2, col1 );</div>
<div class="line"><a name="l00325"></a><span class="lineno">  325</span>&#160;            <span class="keyword">const</span> <span class="keywordtype">double</span> v22 = m_data-&gt;value( row2, col2 );</div>
<div class="line"><a name="l00326"></a><span class="lineno">  326</span>&#160;            <span class="keyword">const</span> <span class="keywordtype">double</span> v32 = m_data-&gt;value( row2, col3 );</div>
<div class="line"><a name="l00327"></a><span class="lineno">  327</span>&#160; </div>
<div class="line"><a name="l00328"></a><span class="lineno">  328</span>&#160;            <span class="comment">// Fourth row</span></div>
<div class="line"><a name="l00329"></a><span class="lineno">  329</span>&#160;            <span class="keyword">const</span> <span class="keywordtype">double</span> v03 = m_data-&gt;value( row3, col0 );</div>
<div class="line"><a name="l00330"></a><span class="lineno">  330</span>&#160;            <span class="keyword">const</span> <span class="keywordtype">double</span> v13 = m_data-&gt;value( row3, col1 );</div>
<div class="line"><a name="l00331"></a><span class="lineno">  331</span>&#160;            <span class="keyword">const</span> <span class="keywordtype">double</span> v23 = m_data-&gt;value( row3, col2 );</div>
<div class="line"><a name="l00332"></a><span class="lineno">  332</span>&#160;            <span class="keyword">const</span> <span class="keywordtype">double</span> v33 = m_data-&gt;value( row3, col3 );</div>
<div class="line"><a name="l00333"></a><span class="lineno">  333</span>&#160; </div>
<div class="line"><a name="l00334"></a><span class="lineno">  334</span>&#160;            <a class="code" href="class_qwt_matrix_raster_data.html#a0629b3294f3bcfd9cc210b06eeeff6c4">value</a> = qwtBicubicInterpolate(</div>
<div class="line"><a name="l00335"></a><span class="lineno">  335</span>&#160;                v00, v10, v20, v30, v01, v11, v21, v31,</div>
<div class="line"><a name="l00336"></a><span class="lineno">  336</span>&#160;                v02, v12, v22, v32, v03, v13, v23, v33,</div>
<div class="line"><a name="l00337"></a><span class="lineno">  337</span>&#160;                colF - col + 0.5, rowF - row + 0.5 );</div>
<div class="line"><a name="l00338"></a><span class="lineno">  338</span>&#160; </div>
<div class="line"><a name="l00339"></a><span class="lineno">  339</span>&#160;            <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00340"></a><span class="lineno">  340</span>&#160;        }</div>
<div class="line"><a name="l00341"></a><span class="lineno">  341</span>&#160;        <span class="keywordflow">case</span> <a class="code" href="class_qwt_matrix_raster_data.html#a3c8def5d9ae452bd82e6c4b71b480209a6f25a9f1f27cb94525ce39df487af13f">BilinearInterpolation</a>:</div>
<div class="line"><a name="l00342"></a><span class="lineno">  342</span>&#160;        {</div>
<div class="line"><a name="l00343"></a><span class="lineno">  343</span>&#160;            <span class="keywordtype">int</span> col1 = qRound( ( x - xInterval.<a class="code" href="class_qwt_interval.html#a0df143a36d76a677976d82987cab8a06">minValue</a>() ) / m_data-&gt;dx ) - 1;</div>
<div class="line"><a name="l00344"></a><span class="lineno">  344</span>&#160;            <span class="keywordtype">int</span> row1 = qRound( ( y - yInterval.<a class="code" href="class_qwt_interval.html#a0df143a36d76a677976d82987cab8a06">minValue</a>() ) / m_data-&gt;dy ) - 1;</div>
<div class="line"><a name="l00345"></a><span class="lineno">  345</span>&#160;            <span class="keywordtype">int</span> col2 = col1 + 1;</div>
<div class="line"><a name="l00346"></a><span class="lineno">  346</span>&#160;            <span class="keywordtype">int</span> row2 = row1 + 1;</div>
<div class="line"><a name="l00347"></a><span class="lineno">  347</span>&#160; </div>
<div class="line"><a name="l00348"></a><span class="lineno">  348</span>&#160;            <span class="keywordflow">if</span> ( col1 &lt; 0 )</div>
<div class="line"><a name="l00349"></a><span class="lineno">  349</span>&#160;                col1 = col2;</div>
<div class="line"><a name="l00350"></a><span class="lineno">  350</span>&#160;            <span class="keywordflow">else</span> <span class="keywordflow">if</span> ( col2 &gt;= m_data-&gt;numColumns )</div>
<div class="line"><a name="l00351"></a><span class="lineno">  351</span>&#160;                col2 = col1;</div>
<div class="line"><a name="l00352"></a><span class="lineno">  352</span>&#160; </div>
<div class="line"><a name="l00353"></a><span class="lineno">  353</span>&#160;            <span class="keywordflow">if</span> ( row1 &lt; 0 )</div>
<div class="line"><a name="l00354"></a><span class="lineno">  354</span>&#160;                row1 = row2;</div>
<div class="line"><a name="l00355"></a><span class="lineno">  355</span>&#160;            <span class="keywordflow">else</span> <span class="keywordflow">if</span> ( row2 &gt;= m_data-&gt;numRows )</div>
<div class="line"><a name="l00356"></a><span class="lineno">  356</span>&#160;                row2 = row1;</div>
<div class="line"><a name="l00357"></a><span class="lineno">  357</span>&#160; </div>
<div class="line"><a name="l00358"></a><span class="lineno">  358</span>&#160;            <span class="keyword">const</span> <span class="keywordtype">double</span> v11 = m_data-&gt;value( row1, col1 );</div>
<div class="line"><a name="l00359"></a><span class="lineno">  359</span>&#160;            <span class="keyword">const</span> <span class="keywordtype">double</span> v21 = m_data-&gt;value( row1, col2 );</div>
<div class="line"><a name="l00360"></a><span class="lineno">  360</span>&#160;            <span class="keyword">const</span> <span class="keywordtype">double</span> v12 = m_data-&gt;value( row2, col1 );</div>
<div class="line"><a name="l00361"></a><span class="lineno">  361</span>&#160;            <span class="keyword">const</span> <span class="keywordtype">double</span> v22 = m_data-&gt;value( row2, col2 );</div>
<div class="line"><a name="l00362"></a><span class="lineno">  362</span>&#160; </div>
<div class="line"><a name="l00363"></a><span class="lineno">  363</span>&#160;            <span class="keyword">const</span> <span class="keywordtype">double</span> x2 = xInterval.<a class="code" href="class_qwt_interval.html#a0df143a36d76a677976d82987cab8a06">minValue</a>() + ( col2 + 0.5 ) * m_data-&gt;dx;</div>
<div class="line"><a name="l00364"></a><span class="lineno">  364</span>&#160;            <span class="keyword">const</span> <span class="keywordtype">double</span> y2 = yInterval.<a class="code" href="class_qwt_interval.html#a0df143a36d76a677976d82987cab8a06">minValue</a>() + ( row2 + 0.5 ) * m_data-&gt;dy;</div>
<div class="line"><a name="l00365"></a><span class="lineno">  365</span>&#160; </div>
<div class="line"><a name="l00366"></a><span class="lineno">  366</span>&#160;            <span class="keyword">const</span> <span class="keywordtype">double</span> rx = ( x2 - x ) / m_data-&gt;dx;</div>
<div class="line"><a name="l00367"></a><span class="lineno">  367</span>&#160;            <span class="keyword">const</span> <span class="keywordtype">double</span> ry = ( y2 - y ) / m_data-&gt;dy;</div>
<div class="line"><a name="l00368"></a><span class="lineno">  368</span>&#160; </div>
<div class="line"><a name="l00369"></a><span class="lineno">  369</span>&#160;            <span class="keyword">const</span> <span class="keywordtype">double</span> vr1 = rx * v11 + ( 1.0 - rx ) * v21;</div>
<div class="line"><a name="l00370"></a><span class="lineno">  370</span>&#160;            <span class="keyword">const</span> <span class="keywordtype">double</span> vr2 = rx * v12 + ( 1.0 - rx ) * v22;</div>
<div class="line"><a name="l00371"></a><span class="lineno">  371</span>&#160; </div>
<div class="line"><a name="l00372"></a><span class="lineno">  372</span>&#160;            <a class="code" href="class_qwt_matrix_raster_data.html#a0629b3294f3bcfd9cc210b06eeeff6c4">value</a> = ry * vr1 + ( 1.0 - ry ) * vr2;</div>
<div class="line"><a name="l00373"></a><span class="lineno">  373</span>&#160; </div>
<div class="line"><a name="l00374"></a><span class="lineno">  374</span>&#160;            <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00375"></a><span class="lineno">  375</span>&#160;        }</div>
<div class="line"><a name="l00376"></a><span class="lineno">  376</span>&#160;        <span class="keywordflow">case</span> <a class="code" href="class_qwt_matrix_raster_data.html#a3c8def5d9ae452bd82e6c4b71b480209acaa0a9e3b8afd376472d6a587a3f9873">NearestNeighbour</a>:</div>
<div class="line"><a name="l00377"></a><span class="lineno">  377</span>&#160;        <span class="keywordflow">default</span>:</div>
<div class="line"><a name="l00378"></a><span class="lineno">  378</span>&#160;        {</div>
<div class="line"><a name="l00379"></a><span class="lineno">  379</span>&#160;            <span class="keywordtype">int</span> row = int( ( y - yInterval.<a class="code" href="class_qwt_interval.html#a0df143a36d76a677976d82987cab8a06">minValue</a>() ) / m_data-&gt;dy );</div>
<div class="line"><a name="l00380"></a><span class="lineno">  380</span>&#160;            <span class="keywordtype">int</span> col = int( ( x - xInterval.<a class="code" href="class_qwt_interval.html#a0df143a36d76a677976d82987cab8a06">minValue</a>() ) / m_data-&gt;dx );</div>
<div class="line"><a name="l00381"></a><span class="lineno">  381</span>&#160; </div>
<div class="line"><a name="l00382"></a><span class="lineno">  382</span>&#160;            <span class="comment">// In case of intervals, where the maximum is included</span></div>
<div class="line"><a name="l00383"></a><span class="lineno">  383</span>&#160;            <span class="comment">// we get out of bound for row/col, when the value for the</span></div>
<div class="line"><a name="l00384"></a><span class="lineno">  384</span>&#160;            <span class="comment">// maximum is requested. Instead we return the value</span></div>
<div class="line"><a name="l00385"></a><span class="lineno">  385</span>&#160;            <span class="comment">// from the last row/col</span></div>
<div class="line"><a name="l00386"></a><span class="lineno">  386</span>&#160; </div>
<div class="line"><a name="l00387"></a><span class="lineno">  387</span>&#160;            <span class="keywordflow">if</span> ( row &gt;= m_data-&gt;numRows )</div>
<div class="line"><a name="l00388"></a><span class="lineno">  388</span>&#160;                row = m_data-&gt;numRows - 1;</div>
<div class="line"><a name="l00389"></a><span class="lineno">  389</span>&#160; </div>
<div class="line"><a name="l00390"></a><span class="lineno">  390</span>&#160;            <span class="keywordflow">if</span> ( col &gt;= m_data-&gt;numColumns )</div>
<div class="line"><a name="l00391"></a><span class="lineno">  391</span>&#160;                col = m_data-&gt;numColumns - 1;</div>
<div class="line"><a name="l00392"></a><span class="lineno">  392</span>&#160; </div>
<div class="line"><a name="l00393"></a><span class="lineno">  393</span>&#160;            <a class="code" href="class_qwt_matrix_raster_data.html#a0629b3294f3bcfd9cc210b06eeeff6c4">value</a> = m_data-&gt;value( row, col );</div>
<div class="line"><a name="l00394"></a><span class="lineno">  394</span>&#160;        }</div>
<div class="line"><a name="l00395"></a><span class="lineno">  395</span>&#160;    }</div>
<div class="line"><a name="l00396"></a><span class="lineno">  396</span>&#160; </div>
<div class="line"><a name="l00397"></a><span class="lineno">  397</span>&#160;    <span class="keywordflow">return</span> <a class="code" href="class_qwt_matrix_raster_data.html#a0629b3294f3bcfd9cc210b06eeeff6c4">value</a>;</div>
<div class="line"><a name="l00398"></a><span class="lineno">  398</span>&#160;}</div>
<div class="line"><a name="l00399"></a><span class="lineno">  399</span>&#160; </div>
<div class="line"><a name="l00400"></a><span class="lineno">  400</span>&#160;<span class="keywordtype">void</span> QwtMatrixRasterData::update()</div>
<div class="line"><a name="l00401"></a><span class="lineno">  401</span>&#160;{</div>
<div class="line"><a name="l00402"></a><span class="lineno">  402</span>&#160;    m_data-&gt;numRows = 0;</div>
<div class="line"><a name="l00403"></a><span class="lineno">  403</span>&#160;    m_data-&gt;dx = 0.0;</div>
<div class="line"><a name="l00404"></a><span class="lineno">  404</span>&#160;    m_data-&gt;dy = 0.0;</div>
<div class="line"><a name="l00405"></a><span class="lineno">  405</span>&#160; </div>
<div class="line"><a name="l00406"></a><span class="lineno">  406</span>&#160;    <span class="keywordflow">if</span> ( m_data-&gt;numColumns &gt; 0 )</div>
<div class="line"><a name="l00407"></a><span class="lineno">  407</span>&#160;    {</div>
<div class="line"><a name="l00408"></a><span class="lineno">  408</span>&#160;        m_data-&gt;numRows = m_data-&gt;values.size() / m_data-&gt;numColumns;</div>
<div class="line"><a name="l00409"></a><span class="lineno">  409</span>&#160; </div>
<div class="line"><a name="l00410"></a><span class="lineno">  410</span>&#160;        <span class="keyword">const</span> <a class="code" href="class_qwt_interval.html">QwtInterval</a> xInterval = <a class="code" href="class_qwt_matrix_raster_data.html#a1d8668b0d9fe4c98514e272837c2b563">interval</a>( Qt::XAxis );</div>
<div class="line"><a name="l00411"></a><span class="lineno">  411</span>&#160;        <span class="keyword">const</span> <a class="code" href="class_qwt_interval.html">QwtInterval</a> yInterval = <a class="code" href="class_qwt_matrix_raster_data.html#a1d8668b0d9fe4c98514e272837c2b563">interval</a>( Qt::YAxis );</div>
<div class="line"><a name="l00412"></a><span class="lineno">  412</span>&#160;        <span class="keywordflow">if</span> ( xInterval.<a class="code" href="class_qwt_interval.html#ad742235a737d4d0b12cba1cab2df55f3">isValid</a>() )</div>
<div class="line"><a name="l00413"></a><span class="lineno">  413</span>&#160;            m_data-&gt;dx = xInterval.<a class="code" href="class_qwt_interval.html#a200b2674f992802666b785a941b26612">width</a>() / m_data-&gt;numColumns;</div>
<div class="line"><a name="l00414"></a><span class="lineno">  414</span>&#160;        <span class="keywordflow">if</span> ( yInterval.<a class="code" href="class_qwt_interval.html#ad742235a737d4d0b12cba1cab2df55f3">isValid</a>() )</div>
<div class="line"><a name="l00415"></a><span class="lineno">  415</span>&#160;            m_data-&gt;dy = yInterval.<a class="code" href="class_qwt_interval.html#a200b2674f992802666b785a941b26612">width</a>() / m_data-&gt;numRows;</div>
<div class="line"><a name="l00416"></a><span class="lineno">  416</span>&#160;    }</div>
<div class="line"><a name="l00417"></a><span class="lineno">  417</span>&#160;}</div>
<div class="ttc" id="aclass_q_vector_html"><div class="ttname"><a href="class_q_vector.html">QVector&lt; double &gt;</a></div></div>
<div class="ttc" id="aclass_qwt_interval_html"><div class="ttname"><a href="class_qwt_interval.html">QwtInterval</a></div><div class="ttdoc">A class representing an interval.</div><div class="ttdef"><b>Definition:</b> <a href="qwt__interval_8h_source.html#l00022">qwt_interval.h:23</a></div></div>
<div class="ttc" id="aclass_qwt_interval_html_a0df143a36d76a677976d82987cab8a06"><div class="ttname"><a href="class_qwt_interval.html#a0df143a36d76a677976d82987cab8a06">QwtInterval::minValue</a></div><div class="ttdeci">double minValue() const</div><div class="ttdef"><b>Definition:</b> <a href="qwt__interval_8h_source.html#l00192">qwt_interval.h:192</a></div></div>
<div class="ttc" id="aclass_qwt_interval_html_a200b2674f992802666b785a941b26612"><div class="ttname"><a href="class_qwt_interval.html#a200b2674f992802666b785a941b26612">QwtInterval::width</a></div><div class="ttdeci">double width() const</div><div class="ttdoc">Return the width of an interval.</div><div class="ttdef"><b>Definition:</b> <a href="qwt__interval_8h_source.html#l00227">qwt_interval.h:227</a></div></div>
<div class="ttc" id="aclass_qwt_interval_html_ad742235a737d4d0b12cba1cab2df55f3"><div class="ttname"><a href="class_qwt_interval.html#ad742235a737d4d0b12cba1cab2df55f3">QwtInterval::isValid</a></div><div class="ttdeci">bool isValid() const</div><div class="ttdef"><b>Definition:</b> <a href="qwt__interval_8h_source.html#l00210">qwt_interval.h:210</a></div></div>
<div class="ttc" id="aclass_qwt_interval_html_ae6a7b6025679010bad8e0a6ade4a2eec"><div class="ttname"><a href="class_qwt_interval.html#ae6a7b6025679010bad8e0a6ade4a2eec">QwtInterval::contains</a></div><div class="ttdeci">bool contains(double value) const</div><div class="ttdef"><b>Definition:</b> <a href="qwt__interval_8cpp_source.html#l00067">qwt_interval.cpp:67</a></div></div>
<div class="ttc" id="aclass_qwt_matrix_raster_data_html"><div class="ttname"><a href="class_qwt_matrix_raster_data.html">QwtMatrixRasterData</a></div><div class="ttdoc">A class representing a matrix of values as raster data.</div><div class="ttdef"><b>Definition:</b> <a href="qwt__matrix__raster__data_8h_source.html#l00028">qwt_matrix_raster_data.h:29</a></div></div>
<div class="ttc" id="aclass_qwt_matrix_raster_data_html_a038effe6e4be13725b7a8d35370595fd"><div class="ttname"><a href="class_qwt_matrix_raster_data.html#a038effe6e4be13725b7a8d35370595fd">QwtMatrixRasterData::setResampleMode</a></div><div class="ttdeci">void setResampleMode(ResampleMode mode)</div><div class="ttdoc">Set the resampling algorithm.</div><div class="ttdef"><b>Definition:</b> <a href="qwt__matrix__raster__data_8cpp_source.html#l00090">qwt_matrix_raster_data.cpp:90</a></div></div>
<div class="ttc" id="aclass_qwt_matrix_raster_data_html_a0629b3294f3bcfd9cc210b06eeeff6c4"><div class="ttname"><a href="class_qwt_matrix_raster_data.html#a0629b3294f3bcfd9cc210b06eeeff6c4">QwtMatrixRasterData::value</a></div><div class="ttdeci">virtual double value(double x, double y) const override</div><div class="ttdef"><b>Definition:</b> <a href="qwt__matrix__raster__data_8cpp_source.html#l00256">qwt_matrix_raster_data.cpp:256</a></div></div>
<div class="ttc" id="aclass_qwt_matrix_raster_data_html_a15284284966f25383fe67f2e278f4869"><div class="ttname"><a href="class_qwt_matrix_raster_data.html#a15284284966f25383fe67f2e278f4869">QwtMatrixRasterData::~QwtMatrixRasterData</a></div><div class="ttdeci">virtual ~QwtMatrixRasterData()</div><div class="ttdoc">Destructor.</div><div class="ttdef"><b>Definition:</b> <a href="qwt__matrix__raster__data_8cpp_source.html#l00079">qwt_matrix_raster_data.cpp:79</a></div></div>
<div class="ttc" id="aclass_qwt_matrix_raster_data_html_a1d8668b0d9fe4c98514e272837c2b563"><div class="ttname"><a href="class_qwt_matrix_raster_data.html#a1d8668b0d9fe4c98514e272837c2b563">QwtMatrixRasterData::interval</a></div><div class="ttdeci">virtual QwtInterval interval(Qt::Axis axis) const override final</div><div class="ttdef"><b>Definition:</b> <a href="qwt__matrix__raster__data_8cpp_source.html#l00134">qwt_matrix_raster_data.cpp:134</a></div></div>
<div class="ttc" id="aclass_qwt_matrix_raster_data_html_a3c8def5d9ae452bd82e6c4b71b480209"><div class="ttname"><a href="class_qwt_matrix_raster_data.html#a3c8def5d9ae452bd82e6c4b71b480209">QwtMatrixRasterData::ResampleMode</a></div><div class="ttdeci">ResampleMode</div><div class="ttdoc">Resampling algorithm The default setting is NearestNeighbour;.</div><div class="ttdef"><b>Definition:</b> <a href="qwt__matrix__raster__data_8h_source.html#l00035">qwt_matrix_raster_data.h:36</a></div></div>
<div class="ttc" id="aclass_qwt_matrix_raster_data_html_a3c8def5d9ae452bd82e6c4b71b480209a6f25a9f1f27cb94525ce39df487af13f"><div class="ttname"><a href="class_qwt_matrix_raster_data.html#a3c8def5d9ae452bd82e6c4b71b480209a6f25a9f1f27cb94525ce39df487af13f">QwtMatrixRasterData::BilinearInterpolation</a></div><div class="ttdeci">@ BilinearInterpolation</div><div class="ttdef"><b>Definition:</b> <a href="qwt__matrix__raster__data_8h_source.html#l00047">qwt_matrix_raster_data.h:47</a></div></div>
<div class="ttc" id="aclass_qwt_matrix_raster_data_html_a3c8def5d9ae452bd82e6c4b71b480209a9fde75b1f87fcdb21a5ef54bb3797700"><div class="ttname"><a href="class_qwt_matrix_raster_data.html#a3c8def5d9ae452bd82e6c4b71b480209a9fde75b1f87fcdb21a5ef54bb3797700">QwtMatrixRasterData::BicubicInterpolation</a></div><div class="ttdeci">@ BicubicInterpolation</div><div class="ttdef"><b>Definition:</b> <a href="qwt__matrix__raster__data_8h_source.html#l00054">qwt_matrix_raster_data.h:53</a></div></div>
<div class="ttc" id="aclass_qwt_matrix_raster_data_html_a3c8def5d9ae452bd82e6c4b71b480209acaa0a9e3b8afd376472d6a587a3f9873"><div class="ttname"><a href="class_qwt_matrix_raster_data.html#a3c8def5d9ae452bd82e6c4b71b480209acaa0a9e3b8afd376472d6a587a3f9873">QwtMatrixRasterData::NearestNeighbour</a></div><div class="ttdeci">@ NearestNeighbour</div><div class="ttdef"><b>Definition:</b> <a href="qwt__matrix__raster__data_8h_source.html#l00041">qwt_matrix_raster_data.h:41</a></div></div>
<div class="ttc" id="aclass_qwt_matrix_raster_data_html_a3e80514459cc6aab03cfd839da53e45e"><div class="ttname"><a href="class_qwt_matrix_raster_data.html#a3e80514459cc6aab03cfd839da53e45e">QwtMatrixRasterData::QwtMatrixRasterData</a></div><div class="ttdeci">QwtMatrixRasterData()</div><div class="ttdoc">Constructor.</div><div class="ttdef"><b>Definition:</b> <a href="qwt__matrix__raster__data_8cpp_source.html#l00072">qwt_matrix_raster_data.cpp:72</a></div></div>
<div class="ttc" id="aclass_qwt_matrix_raster_data_html_a4601944bceabd921cdaa544180576274"><div class="ttname"><a href="class_qwt_matrix_raster_data.html#a4601944bceabd921cdaa544180576274">QwtMatrixRasterData::setValue</a></div><div class="ttdeci">void setValue(int row, int col, double value)</div><div class="ttdoc">Change a single value in the matrix.</div><div class="ttdef"><b>Definition:</b> <a href="qwt__matrix__raster__data_8cpp_source.html#l00181">qwt_matrix_raster_data.cpp:181</a></div></div>
<div class="ttc" id="aclass_qwt_matrix_raster_data_html_a578ffc26f04a9099e2b31fc2d9360adb"><div class="ttname"><a href="class_qwt_matrix_raster_data.html#a578ffc26f04a9099e2b31fc2d9360adb">QwtMatrixRasterData::setValueMatrix</a></div><div class="ttdeci">void setValueMatrix(const QVector&lt; double &gt; &amp;values, int numColumns)</div><div class="ttdoc">Assign a value matrix.</div><div class="ttdef"><b>Definition:</b> <a href="qwt__matrix__raster__data_8cpp_source.html#l00155">qwt_matrix_raster_data.cpp:155</a></div></div>
<div class="ttc" id="aclass_qwt_matrix_raster_data_html_a69db38d8f920edb9dc3f0953ca16db8f"><div class="ttname"><a href="class_qwt_matrix_raster_data.html#a69db38d8f920edb9dc3f0953ca16db8f">QwtMatrixRasterData::setInterval</a></div><div class="ttdeci">void setInterval(Qt::Axis, const QwtInterval &amp;)</div><div class="ttdoc">Assign the bounding interval for an axis.</div><div class="ttdef"><b>Definition:</b> <a href="qwt__matrix__raster__data_8cpp_source.html#l00120">qwt_matrix_raster_data.cpp:120</a></div></div>
<div class="ttc" id="aclass_qwt_matrix_raster_data_html_a8c32a3222b2b4ad15036898532e95ffa"><div class="ttname"><a href="class_qwt_matrix_raster_data.html#a8c32a3222b2b4ad15036898532e95ffa">QwtMatrixRasterData::pixelHint</a></div><div class="ttdeci">virtual QRectF pixelHint(const QRectF &amp;) const override</div><div class="ttdoc">Calculate the pixel hint.</div><div class="ttdef"><b>Definition:</b> <a href="qwt__matrix__raster__data_8cpp_source.html#l00229">qwt_matrix_raster_data.cpp:229</a></div></div>
<div class="ttc" id="aclass_qwt_matrix_raster_data_html_a95b3ade23f3bce8b84702ce64cb20e3e"><div class="ttname"><a href="class_qwt_matrix_raster_data.html#a95b3ade23f3bce8b84702ce64cb20e3e">QwtMatrixRasterData::valueMatrix</a></div><div class="ttdeci">const QVector&lt; double &gt; valueMatrix() const</div><div class="ttdef"><b>Definition:</b> <a href="qwt__matrix__raster__data_8cpp_source.html#l00167">qwt_matrix_raster_data.cpp:167</a></div></div>
<div class="ttc" id="aclass_qwt_matrix_raster_data_html_ab6c21de8fd8945b634624774f3b3d85b"><div class="ttname"><a href="class_qwt_matrix_raster_data.html#ab6c21de8fd8945b634624774f3b3d85b">QwtMatrixRasterData::numColumns</a></div><div class="ttdeci">int numColumns() const</div><div class="ttdef"><b>Definition:</b> <a href="qwt__matrix__raster__data_8cpp_source.html#l00195">qwt_matrix_raster_data.cpp:195</a></div></div>
<div class="ttc" id="aclass_qwt_matrix_raster_data_html_aca86a73cc956acce6edd9731482ccc11"><div class="ttname"><a href="class_qwt_matrix_raster_data.html#aca86a73cc956acce6edd9731482ccc11">QwtMatrixRasterData::numRows</a></div><div class="ttdeci">int numRows() const</div><div class="ttdef"><b>Definition:</b> <a href="qwt__matrix__raster__data_8cpp_source.html#l00204">qwt_matrix_raster_data.cpp:204</a></div></div>
<div class="ttc" id="aclass_qwt_matrix_raster_data_html_afe2b274f467ae6ddb60c5d8f027ab8c6"><div class="ttname"><a href="class_qwt_matrix_raster_data.html#afe2b274f467ae6ddb60c5d8f027ab8c6">QwtMatrixRasterData::resampleMode</a></div><div class="ttdeci">ResampleMode resampleMode() const</div><div class="ttdef"><b>Definition:</b> <a href="qwt__matrix__raster__data_8cpp_source.html#l00099">qwt_matrix_raster_data.cpp:99</a></div></div>
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